Evaluating g-ratio weighted changes in the corpus callosum as a function of age and sex
Recent years have seen a growing interest in relating MRI measurements to the structural-
biophysical properties of white matter fibers. The fiber g-ratio, defined as the ratio between …
biophysical properties of white matter fibers. The fiber g-ratio, defined as the ratio between …
Modeling conduction delays in the corpus callosum using MRI-measured g-ratio
Conduction of action potentials along myelinated axons is affected by their structural
features, such as the axonal g-ratio, the ratio between the inner and outer diameters of the …
features, such as the axonal g-ratio, the ratio between the inner and outer diameters of the …
In vivo histology of the myelin g-ratio with magnetic resonance imaging
The myelin g-ratio, defined as the ratio between the inner and the outer diameter of the
myelin sheath, is a fundamental property of white matter that can be computed from a simple …
myelin sheath, is a fundamental property of white matter that can be computed from a simple …
A revised model for estimating g-ratio from MRI
A key measure of white matter health is the g-ratio, which is defined as the ratio between the
inner axon radius and the outer, myelinated, axon radius. Recent methods have been …
inner axon radius and the outer, myelinated, axon radius. Recent methods have been …
[HTML][HTML] Characterizing axonal myelination within the healthy population: a tract-by-tract mapping of effects of age and gender on the fiber g-ratio
The g-ratio, equal to the ratio of the inner-to-outer diameter of a myelinated axon, is
associated with the speed of conduction, and thus reflects axonal function and integrity. It is …
associated with the speed of conduction, and thus reflects axonal function and integrity. It is …
Age‐related estimates of aggregate g‐ratio of white matter structures assessed using quantitative magnetic resonance neuroimaging
M Bouhrara, RW Kim, N Khattar, W Qian… - Human brain …, 2021 - Wiley Online Library
The g‐ratio, defined as the inner‐to‐outer diameter of a myelinated axon, is associated with
the speed of nerve impulse conduction, and represents an index of axonal myelination and …
the speed of nerve impulse conduction, and represents an index of axonal myelination and …
[HTML][HTML] Quantitative analysis of the myelin g-ratio from electron microscopy images of the macaque corpus callosum
We provide a detailed morphometric analysis of eight transmission electron micrographs
(TEMs) obtained from the corpus callosum of one cynomolgus macaque. The raw TEM …
(TEMs) obtained from the corpus callosum of one cynomolgus macaque. The raw TEM …
Promise and pitfalls of g-ratio estimation with MRI
The fiber g-ratio is the ratio of the inner to the outer diameter of the myelin sheath of a
myelinated axon. It has a limited dynamic range in healthy white matter, as it is optimized for …
myelinated axon. It has a limited dynamic range in healthy white matter, as it is optimized for …
Whole brain g-ratio mapping using myelin water imaging (MWI) and neurite orientation dispersion and density imaging (NODDI)
MR g-ratio, which measures the ratio of the aggregate volume of axons to that of fibers in a
voxel, is a potential biomarker for white matter microstructures. In this study, a new approach …
voxel, is a potential biomarker for white matter microstructures. In this study, a new approach …
Scan–rescan of axcaliber, macromolecular tissue volume, and g‐ratio in the spinal cord
Purpose Recent MRI techniques have been introduced that can extract microstructural
information in the white matter, such as the density or macromolecular content. Translating …
information in the white matter, such as the density or macromolecular content. Translating …